Eyeless Fish in Indiana Caves (GM-10)
Blind fish are scavengers, feeding on organic matter washed into underground channels during rains. Although they lack natural predators, these fish produce no more offspring than the food supply will support.
The geologic setting in which organisms live directly affects their genetic development. The eyeless fish of southern Indiana are a dramatic example of adaptation to a world undergoing change by the geologic forces around us.
Our Hoosier State Beneath Us: Geomorphology